Which of the following statements about baseband transmission is true? Digital signals are converted to analog signals and sent to the channel. Separate channels are used for sending and receiving signals. Sending and receiving signals are done in the same channel simultaneously. Generally, it is used for long distance communication.

(iii) In this, the actions of sending and receiving signals occur simultaneously on the same channel.

How does plantation of trees help reduce the effect of climate change? (ii) By reducing the amount of carbon dioxide through the process of photosynthesis By reducing the amount of carbon dioxide through photosynthesis (iii) By lowering the temperature (iv) By making a lot of rainfall

(ii) By reducing the amount of carbon dioxide through the process of photosynthesis

If a transformer has more turns in the secondary winding than in the primary winding, which of the following statements is correct? (i) It does not change the A.C. voltage. (ii) It steps down the A.C. voltage. (iii) It steps up the A.C. voltage. (iv) It steps up the A.C. voltage as the situation requires.

(iii) It increases the A.C. voltage.

Which is the correct order of metal processing for their purification? (i) Concentration, oxidation, refining, reduction (ii) Concentration, reduction, oxidation, refining (iii) Concentration, reduction, refining, oxidation (iv) Concentration, oxidation, reduction, refining

Concentration, Oxidation, Reduction, Refining

Write any one difference between rare and endangered species.

A rare species naturally has small numbers but is not in immediate danger of extinction, whereas an endangered species' numbers have declined so much that, without conservation, it will soon become extinct.

Write one medicinal use of the organism shown in the figure. (The figure shows yarsagumba — a fungus growing out of the body of an insect.)

Yarsagumba is used as a restorative tonic — it increases physical vigor and is used medicinally for kidney and respiratory problems.

Write the principle which explains why a ship floats in water.

Archimedes' principle (principle of flotation) — a body floats if the weight of the liquid displaced by it is equal to or greater than the weight of the body.

To which special property of water is the given graph related? (The graph shows the volume decreasing between 0–5^\circ\text{C}, reaching a minimum at 4^\circ\text{C} and rising after that.)

It is related to the anomalous expansion of water.

What is the relationship between thickness and focal length of a lens?

The thicker (more strongly curved) the lens, the shorter its focal length — that is, they have an inverse (reciprocal) relationship.

Give any one reason for elements in the same group having the same valency despite differences in atomic size.

Because all elements in the same group have the same number of electrons in their outermost shell (valence electrons), and valency is therefore determined by that.

Write the balanced chemical equation that takes place while heating calcium carbonate.

CaCO₃ —(heat)→ CaO + CO₂↑

Show the diagram of purification of impure copper by electro-refining method.

What should be shown in the diagram: a vessel containing acidified copper sulphate (CuSO₄ + H₂SO₄) solution as the electrolyte; the thick plate of impure copper connected to the anode (+) and the thin plate of pure copper connected to the cathode (−); both connected to a battery; anode mud collected at the bottom of the vessel. Labeling: Anode (impure copper), Cathode (pure copper), Electrolyte, Battery, Anode mud. When electric current flows, copper from the anode becomes Cu²⁺ and goes into the solution and pure copper deposits on the cathode; impurities settle down as anode mud.

How many questions and marks are in the SEE 2082 Science and Technology (Koshi Province, RE-1041'KoP') paper?

40 questions worth 75 marks. There are 19 of 1 mark, 14 of 2 marks and 7 of 4 marks.

Is this the real board paper?

Yes. It is the SEE 2082 paper printed for Koshi Province, code RE-1041'KoP', typed up from the original and checked by the GyanMul team.

Are the answers included?

Answers to the 19 one-mark questions are on this page (GyanMul's model answers; the NEB does not publish an answer key). Worked answers and the marking for every other question are in GyanMul Prep, free with an account.

Can I download this paper as a PDF?

Yes. Press "Print / Save as PDF" at the top of the page and choose "Save as PDF" in your browser's print window.

Secondary Education Examination · Class 10

SEE 2082 Science and Technology question paper, Koshi Province

SEE 2082 Science and Technology (Koshi Province, RE-1041'KoP') has 40 questions worth 75 marks, with 3 hours to answer them. It has 19 of 1 mark, 14 of 2 marks and 7 of 4 marks.

The SEE examination is conducted by the National Examinations Board (NEB), Nepal. This paper was typed up from the original and checked by the GyanMul team.

Every question is given in Nepali and English, as the paper prints it.

40 questions
75 marks
3 hours
Code RE-1041'KoP'

Sit this paper as a timed mock test, freeनेपालीमा पढ्नुहोस्

The account is free. Timer, marking, worked answers and help from Gurubaa, in one place.

Questions

Answers are shown for the 19 one-mark questions. They are GyanMul's model answers: the NEB does not publish an answer key, so these are not the board's answers.

Question 11 mark
If an experiment is done to find how various amounts of fertilizers affect the height of tomato plant, what is the independent variable in this experiment? (i) Height of tomato plant (ii) Amount of fertilizer (iii) Amount of water (iv) Type of soil
विद्यार्थीहरूले विभिन्न मात्रामा मल प्रयोग गर्दा टमाटरको उचाइमा कस्तो असर पर्छ भनेर परीक्षण गरियो भने यस परीक्षणमा स्वतन्त्र चर कुन हो ? (i) टमाटरको उचाइ (Height of tomato plant) (ii) मलको मात्रा (Amount of fertilizer) (iii) पानीको मात्रा (Amount of water) (iv) माटोको प्रकार (Type of soil)
Answer: Amount of fertilizer
Question 21 mark
Which of the following statements about baseband transmission is true? Digital signals are converted to analog signals and sent to the channel. Separate channels are used for sending and receiving signals. Sending and receiving signals are done in the same channel simultaneously. Generally, it is used for long distance communication.
बेसब्यान्ड प्रसारण सम्बन्धित भनाइ तलका मध्ये कुन सही छ ? (i) डिजिटल सिग्नललाई एनालग सिग्नलमा परिवर्तन गरेर च्यानलमा पठाइन्छ । (ii) सिग्नल पठाउन र प्राप्त गर्न फरक फरक च्यानल प्रयोग गरिन्छ । (iii) यसमा सिग्नल पठाउने र प्राप्त गर्ने क्रिया एउटै च्यानलमा सँगसँगै हुन्छ । (iv) सामान्यतया यो लामो दुरीको सञ्चारका लागि प्रयोग गरिन्छ ।
Answer: (iii) In this, the actions of sending and receiving signals occur simultaneously on the same channel.
Question 31 mark
How does plantation of trees help reduce the effect of climate change? (ii) By reducing the amount of carbon dioxide through the process of photosynthesis By reducing the amount of carbon dioxide through photosynthesis (iii) By lowering the temperature (iv) By making a lot of rainfall

Questions learners ask

How many questions and marks are in the SEE 2082 Science and Technology (Koshi Province, RE-1041'KoP') paper?: 40 questions worth 75 marks. There are 19 of 1 mark, 14 of 2 marks and 7 of 4 marks.
How much time is given for this paper?: 3 hours (180 minutes).
Is this the real board paper?: Yes. It is the SEE 2082 paper printed for Koshi Province, code RE-1041'KoP', typed up from the original and checked by the GyanMul team.
Are the answers included?: Answers to the 19 one-mark questions are on this page (GyanMul's model answers; the NEB does not publish an answer key). Worked answers and the marking for every other question are in GyanMul Prep, free with an account.
Can I download this paper as a PDF?: Yes. Press "Print / Save as PDF" at the top of the page and choose "Save as PDF" in your browser's print window.

Source: prep.gyanmul.com/see/past-papers/science/2082/koshi · GyanMul Prep